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Finding the Fourth Proportional to 78,711,912,111.70, 118,067,868,167.55 and 78,711,912,111.70

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Solution

The fourth proportional to 78,711,912,111.70, 118,067,868,167.55 and 78,711,912,111.70 is: 118,067,868,167.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,711,912,111.70 : 118,067,868,167.55 = 78,711,912,111.70 : x
  2. Step 2: Convert to fraction form
    78,711,912,111.70/118,067,868,167.55 = 78,711,912,111.70/x
  3. Step 3: Cross multiply
    78,711,912,111.70x = 118,067,868,167.55 × 78,711,912,111.70
  4. Step 4: Simplify right side
    78,711,912,111.70x = 9,293,347,662,419,978,092,544
  5. Step 5: Solve for x
    x = 9,293,347,662,419,978,092,544/78,711,912,111.70
  6. Step 6: Final answer
    x = 118,067,868,167.55

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.